CN105623721B - A kind of method for preparing needle-shape coke raw material - Google Patents
A kind of method for preparing needle-shape coke raw material Download PDFInfo
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Abstract
The invention discloses a kind of method for preparing needle-shape coke raw material, this method, which includes injecting the mixed material heated by heating furnace radiant section in coke drum, carries out delayed coking reaction, and the oil gas that delayed coking reaction is produced is fractionated, and obtains wax oil component；Wherein, the mixed material contains catalytic cracked oil pulp and delayed coking raw material, during delayed coking reaction, cooling oil and/or cooling water are injected by pipeline in the coke drum top, steam is injected in coke drum bottom, and the pipeline of injection cooling oil and/or cooling water is stretched into coke drum, the sulfur content of the catalytic cracked oil pulp is below 0.7 weight %.Catalytic cracked oil pulp can effectively be utilized by the method for the present invention, and reduce the green coke of process, so as to increase the yield of needle-shape coke raw material.
Description
Technical field
The present invention relates to a kind of method for preparing needle-shape coke raw material.
Background technology
Needle coke is production high power, the main raw material(s) of ultra high power graphite electrode, and high-quality needle coke price is higher, can
As electric furnace steel making ultra high power graphite electrode, ultracapacitor used for electric vehicle, communication battery li-ion electrode and by
Extensive use.The influence factor of most critical is feedstock property, the better obtained needle coke production of feedstock property in needle coke production
Product higher grade.Arene content reaches 30%-50% in the general raw material for requiring production needle coke, and colloid, asphalitine are less than
1%th, ash content is less than 0.5% less than 100ug/g, sulfur content.Catalytic cracked oil pulp is rich in a large amount of aromatic components, is production needle coke
Excellent component, but colloid, asphalitine and catalyst fines, heavy metal, the impurity such as sulphur also easily polymerizeing containing part simultaneously, this
A little components and impurity can have a strong impact on the preparation process of needle coke, and needle-like will not even be generated by making the needle coke Quality Down of production
It is burnt.If said components and impurity separated, catalytic cracked oil pulp is then preferable needle-shape coke raw material.At present, cycle oil
Slurry is mainly used in blended fuel oil or incorporation subtracts slag as the raw material of delayed coking, in above process substantial amounts of aromatic component into
For fuel oil ingredient and ordinary coke, this is undoubtedly great waste.Delayed coking is a kind of hot-working work of depth thermal cracking
Cracking, the two distinct types of reaction of polycondensation can occur simultaneously for skill, raw material, be currently heavy oil particularly inferior heavy oil mainly plus
One of work technique.The main reactor of delayed coking is coke drum, and raw material is converted into oil gas and coke in coke drum, and tradition is prolonged
A large amount of aromatic components, which have little time to leave from coke drum, in slow coking process translates into coke, can reduce the production of needle-shape coke raw material
Amount..
CN101724420B discloses one kind using delay coking process processing catalytic cracked oil pulp and conventional coking raw material
The method for producing needle-shape coke raw material.Slurry oil is fed from coke drum middle and upper part in the method, and conventional coking raw material is from coke drum bottom
Charging, slurry oil is in contact with high-temperature oil gas in coke drum, removes the component for being unfavorable for needle coke production, passes through coking fractional distillation column
Side line obtain wax tailings be used as needle-shape coke raw material.In the method because slurry oil is without heating furnace radiant section, temperature compared with
Low and slurry oil is all fed from middle and upper part, and the residence time is shorter, and this causes part colloid, asphalitine to be not sufficiently reacted, can quilt
Oil gas is carried in wax tailings；If the sulfur content on the other hand in raw material slurry oil is higher, the sulfur content in wax tailings is difficult
Meet and require, therefore the application of this method is considerably limited.In addition, the main reactor of delayed coking is coke drum,
Raw material is converted into oil gas and coke, conventional delayed coking technique a large amount of aromatic components and has little time to leave from coke drum in coke drum
Coke is translated into, the yield of needle-shape coke raw material can be reduced.
The content of the invention
Present invention aims at a kind of new method for preparing needle-shape coke raw material is provided, can have by the method for the present invention
Effect utilizes catalytic cracked oil pulp, and reduces the green coke of process, so as to increase the yield of needle-shape coke raw material.
The present invention provides a kind of method for preparing needle-shape coke raw material, wherein, this method includes that heating furnace radiant section will be passed through
Delayed coking reaction is carried out in the mixed material injection coke drum of heating, and the oil gas that delayed coking reaction is produced is divided
Evaporate, obtain wax oil component；Wherein, the mixed material contains catalytic cracked oil pulp and delayed coking raw material, anti-in delayed coking
During answering, cooling oil and/or cooling water are injected by pipeline in the coke drum top, steam is injected in coke drum bottom,
And the pipeline of injection cooling oil and/or cooling water is stretched into coke drum, the sulfur content of the catalytic cracked oil pulp is 0.7 weight %
Below.
In the preparation method of the present invention, cooling oil is injected and/or cold by pipeline at the top of the coke drum
But water, and the injection cooling oil that stretches into coke drum of suitable control and/or the length of pipeline of cooling water, on the one hand can reduce Jiao
The just basic gasification before green coke area is reached of charcoal tower upper temp, another aspect cooling oil and/or cooling water, green coke area is not influenceed,
So as to advantageously reduce beneficial to the reaction for producing the aromatic component of needle coke in coke drum, process coking is reduced, single column is stable
Operation cycle extends.
In addition, in the present invention, cooling oil and/or cooling water are to be injected by pipeline in the form of water column so that cold
But oil and/or cooling water will not be directly carried in main oil gas piping in the form of fine droplet.
In the preparation method of the present invention, by injecting steam in coke drum bottom, green coke can be effectively kept
The residence time of secondary response component easily occurs for duct and reduction.
In the preparation method of the present invention, coking raw material passes through one with the colloid in catalytic cracked oil pulp, asphalitine
The cracking and condensation reaction of series, are removed, metal impurities also serve as the group of coke in the form of generating distillate and coke
Get removing.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the schematic diagram for implementing the equipment for the method for preparing needle-shape coke raw material that the present invention is provided.
Embodiment
The embodiment to the present invention is described in detail below.It should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
According to the method for preparing needle-shape coke raw material of the present invention, the mixing that it includes to heat by heating furnace radiant section is former
Delayed coking reaction is carried out in material injection coke drum, and the oil gas that delayed coking reaction is produced is fractionated, wax oil group is obtained
Point；Wherein, the mixed material contains catalytic cracked oil pulp and delayed coking raw material, during delayed coking reaction, in institute
State coke drum top and cooling oil and/or cooling water are injected by pipeline, steam, and injection cooling oil are injected in coke drum bottom
And/or the pipeline of cooling water is stretched into coke drum, the sulfur content of the catalytic cracked oil pulp is below 0.7 weight %.
According to the present invention, the sulfur content of the catalytic cracked oil pulp is below 0.7 weight %, preferably in 0.1-0.6 weights
In the range of amount %, more preferably in the range of 0.4-0.5 weight %.
In the present invention, as long as its sulfur content is below 0.7 weight % for the catalytic cracked oil pulp, it is used as this
The catalytic cracked oil pulp of sample can be the catalytic cracked oil pulp obtained from catalytic cracking fractionating tower bottom of towe.In addition, as from catalysis
The catalytic cracked oil pulp that cracking fractionation column bottom is obtained, its fragrance point content is usually above 50 weight %.
Preferably, the pipeline of injection cooling oil and/or cooling water is extended vertically into coke drum.
Preferably, length of the mixed material in coke drum feed entrance point apart from cylinder lower end accounts for whole barrel lenght
5/10~7/10.Here, the length of the cylinder refers to that cylinder connects with coke drum upper cover connecting portion and cylinder with bottom cone
Vertical range between socket part；Length of the mixed material in coke drum feed entrance point apart from cylinder lower end refers to feed entrance point
To the vertical range of cylinder and bottom cone connecting portion.
Top of coke tower for example can be able to be dome head or ellipsoidal head using conventional end socket.Work as top of coke tower
During using dome head, the injection cooling oil and/or the length of pipeline of cooling water stretched into coke drum is the 1- of coke drum diameter
45%, preferably 20-35%.When top of coke tower uses ellipsoidal head, the length of pipeline of injection cooling oil and/or cooling water
For the 1-22% of coke drum diameter, preferably 12-20%.
In the present invention, in order to ensure that the cooling oil injected by pipeline and/or cooling water will not directly be carried to big oil
In gas pipeline, the opening diameter of the pipeline of injection cooling oil and/or cooling water is preferably 10-50 millimeters, more preferably 20-
30 millimeters.
In the present invention, in order to further remain with the aromatic component for being beneficial to produce needle coke, preferably in the coke drum
Top pass through pipeline and inject cooling oil and cooling water.In this case, cooling oil and cooling water can pass through pipeline respectively
Injection, can also as a mixture be injected by same pipeline, and preferably the two is injected by pipeline respectively.
When injecting cooling oil and cooling water by pipeline at the top of the coke drum, the cooling oil and the cooling
The weight ratio of the injection rate of water can be 0.01-1：1, preferably 0.1-0.3：1.
The weight ratio of total consumption of the cooling oil and the cooling water and the consumption of the mixed material can be 0.01-
0.25：1, preferably 0.01-0.10：1.For the cooling oil and total consumption of the cooling water, if only injecting described cold
But oil and be not injected into the cooling water, then total consumption list refers to the injection rate of the cooling oil；If only injecting the cooling
Water and be not injected into the cooling oil, then total consumption list refers to the injection rate of the cooling water；If injecting the cooling simultaneously
Oily and described cooling water, then total consumption refer to the injection rate sum of the two.
In the present invention, in order to keep green coke duct and reduction easily occur secondary response component residence time, this method
Select in coke drum bottom injection steam, the weight ratio of the consumption of steam and mixed material can be 0.01-0.05:1, be preferably
0.01-0.03:1。
It can be carried out in coke drum bottom injection steam by pipeline, the opening diameter of the pipeline is not limited particularly
It is fixed, for example can be 10-50 millimeters, preferably 20-30 millimeters.
In the present invention, the cooling oil can be various quench oils commonly used in the art.In the preferred case, institute
It is the petroleum distillate that boiling range is 100-450 DEG C to state cooling oil, and more preferably boiling range is 250-380 DEG C of petroleum distillate.
In the present invention, the cooling water can be fresh water, softened water, demineralized water, deaerated water and condensate in extremely
Few one kind, preferably demineralized water.
In the present invention, the mixed material can be heated to 490-515 DEG C before the coke drum is injected, preferably
492-500℃。
The delayed coking raw material can be various conventional delayed coking raw materials commonly used in the art, for example can be with
For in decompression residuum, reduced crude, visbroken resids, heavy deasphalted oil, viscous crude, topped crude, shale oil and liquefied coal coil
At least one.The crude oil that the viscous crude refers to asphalitine and gum level is higher and viscosity is larger.
In order that the mixed material can be heated in the range of said temperature before the coke drum is injected, preferably
The outlet temperature of the heating furnace radiant section is 490-515 DEG C；More preferably 492-500 DEG C
In the present invention, the condition of the delayed coking reaction includes：Coke pressure tower is 0.05-0.25MPa, coking week
Phase is 18-36h；It is preferred that coke pressure tower is 0.12-0.17MPa, coking cycle is 24-36h.In the present invention, pressure refers to
Absolute pressure.
In the present invention, the scope of the feed weight ratio of the catalytic cracked oil pulp and the delayed coking raw material can be
Changed in wide scope.It is preferred that the feed weight ratio of the catalytic cracked oil pulp and the delayed coking raw material is 0.1：99.9~
99.9:0.1, more preferably 20:80~50:50.
In addition, in the present invention, there is no particular limitation for the coke drum, can be various Jiao commonly used in the art
Charcoal tower.
In the present invention, it is fractionated by the coke drum tower top oil gas for producing delayed coking reaction, obtains wax oil group
Point.The fractionation can be carried out in fractionating column, and the condition of the fractionation includes：100~145 DEG C of fractionator overhead temperature, point
Evaporate column overhead 0.13~0.17MPa of pressure, 310~360 DEG C of fractionating column column bottom temperature.
In the present invention, the wax oil component refers to distillate of the boiling range at 350-450 DEG C or so.
In one embodiment, the group technology of the invention is implemented in equipment as shown in Figure 1, specifically,
The equipment mainly includes：Blender 3, delay coking heating furnace, delayed coker fractionator 7 and delayed coking coke drum 6.Delay
Coking raw material oil 1 is mixed with catalytic cracked oil pulp 2 in blender 3, after being then extracted optionally with coker gas oil, coking
(not marked in Fig. 1) enters heating furnace convection section 4 after wax oil, the heat exchange of coking wax slop, and two strands are divided into after being heated through convection section and is entered
Expect that (i.e. upper feeding and lower charging) enters the bottom of coking fractional distillation column 7, in high-temperature oil gas 12 of the fractionating column bottom from coke drum 6
The liquid phase stream formed after being exchanged heat with feedstock oil upper feeding and coking wax slop 17 feeds mixed under fractionation column base and feedstock oil
Conjunction forms fractionating column base oil 8, and fractionating column base oil 8 is sent to heating furnace radiant section 5 after extracting out, and heated stove radiant section is heated to target
Coke drum 6 is injected by pipeline 9 after temperature and carries out coking reaction, while injecting steam by pipeline 18；The top of coke drum 6 is set
Cooling oil supply pipeline 10 and/or cooling water supply pipeline 11 are equipped with, passes through cooling oil supply pipeline 10 during green coke
And/or the injection cooling oil of cooling water supply pipeline 11 and/or cooling water；The coke of generation is stayed in coke drum 6, the high temperature of generation
Oil gas is transported in fractionating column 7 by pipeline 12 and separated, and obtains rich tail gas of coking plant 13, coker gasoline 14, the and of coker gas oil 15
Wax tailings 16；Wax tailings are needle-shape coke raw material.In the above-described embodiment, (Fractionator Bottom weight of oil is with dividing for recycle ratio
Evaporate the ratio of the difference of feed weight sum above and below tower bottom again with feed weight sum above and below fractionating column bottom) can be
0.05-0.8:1, preferably 0.1-0.3:1.In the present invention, wax tailings (i.e. described wax oil component) refer to boiling range in 350-
450 DEG C or so of distillate；Coking wax slop refers to that initial boiling point is higher than 430 DEG C of heavy wax oil.
The invention will be further described by the following examples.
Embodiment 1
The present embodiment is used for the preparation method for illustrating the needle-shape coke raw material that the present invention is provided.
The present embodiment is using the flow shown in Fig. 1.Coking raw material decompression residuum 1 (relevant parameter is as shown in table 1) and catalysis
Cracking slurry oil 2 (relevant parameter is as shown in table 1) presses 75 in blender 3:25 ratio is mixed, with coking bavin after extraction
(not marking heat exchange in figure) enters heating furnace convection section 4 after oil, coking stage casing oil, wax tailings, coking wax slop exchange heat successively
Preheating, be then divided into above and below two bursts of chargings enter fractionating column 7 bottoms, in high-temperature oil gas 12 of the fractionating column bottom from coke drum 6
The liquid phase stream formed after being exchanged heat with feedstock oil upper feeding, coking wax slop 17 is mixed in fractionation column base with charging under feedstock oil
Fractionating column base oil 8 is formed, fractionating column base oil 8 is sent to heating furnace radiant section 5 after extracting out, and recycle ratio is 0.2：1, heated stove radiation
Section 5 is heated to after 495 DEG C enter tower top by pipeline 9 for the coke drum 6 of dome head and reacted under 0.15MPa, together
When coke drum bottom pass through pipeline 18 inject steam；Length of the coke drum feed entrance point apart from cylinder lower end accounts for whole barrel lenght
1/2, meanwhile, tower top by pipeline 10 inject as cooling oil coking stage casing oil (be derived from fractionating column 7, boiling range be 250~
380 DEG C) and the demineralized water (temperature be 30 DEG C) as cooling water injected by pipeline 11, pipeline 10 and pipeline 11 extend into coke
In tower, the opening diameter of pipeline 10 and pipeline 11 is 20mm, and the length that pipeline 10 and pipeline 11 are stretched into coke drum is respectively Jiao
The weight ratio of the 30% of charcoal tower diameter, cooling oil and demineralized water is 0.1：1, the total injection of cooling oil and demineralized water is with being mixed into
The weight ratio for expecting injection rate is 0.05：1；Coke tower bottom steam passes through pipeline 18 (opening diameter injects for 20mm), the note of steam
The weight ratio for entering amount and mixed feeding injection rate is 0.03:1；Coke drum green coke cycle 24h, the coke of generation stays in coke drum
Interior, the high-temperature oil gas of generation, which enters, is separated that (separation condition is fractionation column pressure on top surface 0.15MPa, fractionating column in fractionating column 7
332 DEG C of column bottom temperature, 126 DEG C of fractionator overhead temperature), obtain rich tail gas of coking plant 13, coker gasoline 14, coker gas oil 15 and coking
Wax oil 16, wax tailings 16 are needle-shape coke raw material.The product distribution finally obtained and the property of the needle-shape coke raw material of gained
As shown in table 2.
Comparative example 1
Carried out according to the method for embodiment 1, the difference is that injecting cooling oil and cooling water not into the coke drum 4, most
The product distribution obtained afterwards and the property of the needle-shape coke raw material of gained are as shown in table 2.
Comparative example 2
Carried out according to the method for embodiment 1, the difference is that steam is not injected into the coke drum 4, the production finally obtained
The property of the needle-shape coke raw material of product distribution and gained is as shown in table 2.
Embodiment 2
The present embodiment is used for the preparation method for illustrating the needle-shape coke raw material that the present invention is provided.
Carried out using the method for embodiment 1, unlike：Decompression residuum and catalytic cracked oil pulp in a mixer according to
70:30 ratio is mixed；Furnace outlet temperature is 496 DEG C；Coke pressure tower is 0.16MPa；Recycle ratio is 0.25：1；
Length of the coke drum feed entrance point apart from cylinder lower end accounts for the 9/10 of whole barrel lenght；Replaced with the same amount of cooling water
The cooling oil, and the injection rate of the cooling water and cooling water described in embodiment 1 and the total injection phase of the cooling oil
Together.The product distribution finally obtained and the property of the needle-shape coke raw material of gained are as shown in table 2.
Embodiment 3
The present embodiment is used for the preparation method for illustrating the needle-shape coke raw material that the present invention is provided.
Carried out using with the method for embodiment 1, unlike：Decompression residuum and catalytic cracked oil pulp in a mixer according to
65:35 ratio is mixed；Furnace outlet temperature is 497 DEG C；Coke pressure tower is 0.17MPa；Recycle ratio is 0.3：1；
Length of the coke drum feed entrance point apart from cylinder lower end accounts for the 7/10 of whole barrel lenght；Replaced with the same amount of cooling oil
The cooling water, and the injection rate of the cooling oil and cooling water described in embodiment 1 and the total injection phase of the cooling oil
Together.The product distribution finally obtained and the property of the needle-shape coke raw material of gained are as shown in table 2.
Embodiment 4
The present embodiment is used for the preparation method for illustrating the needle-shape coke raw material that the present invention is provided.
Carried out according to the method for embodiment 1, unlike：Furnace outlet temperature is 498 DEG C；Coke pressure tower is
0.17MPa；Recycle ratio is 0.15：1.The product distribution finally obtained and the property of the needle-shape coke raw material of gained are as shown in table 2.
Embodiment 5
The present embodiment is used for the preparation method for illustrating the needle-shape coke raw material that the present invention is provided.
Carried out according to the method for embodiment 3, unlike：Furnace outlet temperature is 498 DEG C；Recycle ratio is 0.2：1.Most
The product distribution obtained afterwards and the property of the needle-shape coke raw material of gained are as shown in table 2.
Embodiment 6
The present embodiment is used for the preparation method for illustrating the needle-shape coke raw material that the present invention is provided.
Carried out according to the method for embodiment 3, the difference is that pipeline 10 and pipeline 11 stretch into length in coke drum and be respectively Jiao
The 20% of charcoal tower diameter.The product distribution finally obtained and the property of the needle-shape coke raw material of gained are as shown in table 3.
Embodiment 7
The present embodiment is used for the preparation method for illustrating the needle-shape coke raw material that the present invention is provided.
Carried out according to the method for embodiment 3, the difference is that top of coke tower uses ellipsoidal head, and pipeline 10 and pipeline 11
Stretch into length in coke drum is respectively coke drum diameter 12%.The product distribution finally obtained and the needle-shape coke raw material of gained
Property it is as shown in table 3.
Embodiment 8
The present embodiment is used for the preparation method for illustrating the needle-shape coke raw material that the present invention is provided.
Carried out according to the method for embodiment 3, unlike, top of coke tower uses ellipsoidal head, and pipeline 10 and pipeline
11 stretch into 20% that length in coke drum is respectively coke drum diameter.The product distribution finally obtained and the needle coke of gained are former
The property of material is as shown in table 3.
Embodiment 9
Carried out according to the method for embodiment 3, the difference is that pipeline 10 and pipeline 11 stretch into length in coke drum and be respectively Jiao
The 5% of charcoal tower diameter.The product distribution finally obtained and the property of the needle-shape coke raw material of gained are as shown in table 3.
Embodiment 10
Carried out according to the method for embodiment 1, unlike：Cooling oil and the weight of demineralized water ratio are 0.3：1, cooling oil and
The total injection of demineralized water is 0.1 with the weight ratio of mixed feeding injection rate：1；The injection rate of coke tower bottom steam is with being mixed into
The weight ratio for expecting injection rate is 0.01:1.The product distribution finally obtained and the property such as institute of table 3 of the needle-shape coke raw material of gained
Show.
Table 1
Table 2
Table 3
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (16)
1. a kind of method for preparing needle-shape coke raw material, it is characterised in that this method is included by the heating of heating furnace radiant section
Delayed coking reaction is carried out in mixed material injection coke drum, and the oil gas that delayed coking reaction is produced is fractionated, is obtained
Wax oil component；Wherein, the mixed material contains catalytic cracked oil pulp and delayed coking raw material, in delayed coking reaction process
In, cooling oil and/or cooling water are injected by pipeline in the coke drum top, steam, and injection are injected in coke drum bottom
The pipeline of cooling oil and/or cooling water is stretched into coke drum, and the sulfur content of the catalytic cracked oil pulp is below 0.7 weight %.
2. according to the method described in claim 1, wherein, the sulfur content of the catalytic cracked oil pulp is 0.1-0.6 weight %.
3. according to the method described in claim 1, wherein, when top of coke tower use dome head when, the note stretched into coke drum
Enter 1-45% of the length of pipeline of cooling oil and/or cooling water for coke drum diameter.
4. according to the method described in claim 1, wherein, when top of coke tower use ellipsoidal head when, injection cooling oil and/or
The length of pipeline of cooling water is the 1-22% of coke drum diameter.
5. according to the method described in claim 1, wherein, in the mixed material, the catalytic cracked oil pulp and coking raw material
Weight ratio be 0.1:99.9~99.9:0.1.
6. according to the method described in claim 1, wherein, the mixed material is in coke drum feed entrance point apart from cylinder lower end
Length accounts for the 5/10~7/10 of whole barrel lenght.
7. the method according to any one in claim 1-6, wherein, the pipeline of injection cooling oil and/or cooling water
Opening diameter is 10-50 millimeters.
8. according to the method described in claim 1, wherein, pass through pipeline at the top of the coke drum and inject cooling oil and cooling
Water, and the weight ratio of the cooling oil and the cooling water is 0.01-1：1.
9. the method according to claim 1 or 8, wherein, total consumption of the cooling oil and the cooling water is mixed with described
The weight ratio for closing the consumption of raw material is 0.01-0.25：1.
10. the method according to claim 1 or 8, wherein, the cooling oil is the petroleum distillate that boiling range is 100-450 DEG C.
11. the method according to claim 1 or 8, wherein, the cooling water be in demineralized water and/or deaerated water at least
It is a kind of.
12. according to the method described in claim 1, wherein, the mixed material is heated to before the coke drum is injected
490-515℃。
13. according to the method described in claim 1, wherein, the weight of steam and the mixed material consumption of coke drum bottom injection
Than for 0.01-0.05:1.
14. the method according to any one in claim 1,5 and 12, wherein, the delayed coking raw material is normal pressure slag
One kind in oil, decompression residuum, visbroken resids, heavy deasphalted oil, viscous crude, topped crude, shale oil and liquefied coal coil or
It is a variety of.
15. the method according to any one in claim 1-6,8 and 12, wherein, the condition of the delayed coking reaction
Including：Coke pressure tower is 0.05-0.25MPa, coking cycle 18-36h.
16. method according to claim 7, wherein, the condition of the delayed coking reaction includes：Coke pressure tower is
0.05-0.25MPa, coking cycle 18-36h.
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| CN107541239B (en) * | 2016-06-29 | 2019-06-11 | 中国石油天然气股份有限公司 | Steam thermal cracking imitative experimental appliance and technique |
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| CN1289819A (en) * | 1999-09-29 | 2001-04-04 | 中国石油化工集团公司 | Coking delay process for lowering foam layer in coke tower |
| CN102732297A (en) * | 2011-04-12 | 2012-10-17 | 中国石油化工股份有限公司 | Method for delaying coking |
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